Patent US3066247A successfully refreshed from Google Patents.
US3066247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical capacitors
Assignee: Sprague Electric Co
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Filing: 1954-08-25
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Granted: 1962-11-27
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Expires: 1974-08-25
Abstract
No abstract record available.
Inventors
- 👤 Robinson Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A CAPACITOR COMPRISING A BODY OF FILM-FORMING METAL, A DIELECTRIC FILM CONSTITUTING A COMPOUND OF SAID FILM FORMING METAL ON THE SURFACE OF SAID BODY, A LAYER OF A SOLID SEMI-CONDUCTIVE MATERIAL IN INTIMATE CONTACT WITH SAID DIELECTRIC FILM, SAID SEMICONDUCTIVE MATERIAL BEING REDUCIBLE IN THE PRESENCE OF HIGH FIELDS, SAID FILM-FORMING
Claim 2
Dependent Claim
52 words
A CAPACITOR COMPRISING A BODY OF FILM-FORMING METAL, A DIELECTRIC FILM CONSTITUTING A COMPOUND OF SAID FILM FORMING METAL ON THE SURFACE OF SAID BODY, A LAYER OF A SOLID SEMI-CONDUCTIVE MATERIAL IN INTIMATE CONTACT WITH SAID DIELECTRIC FILM, SAID SEMICONDUCTIVE MATERIAL BEING REDUCIBLE IN THE PRESENCE OF HIGH FIELDS, SAID FILM-FORMING
References Cited (Backward Citations)
US1238660A
Cited
US1621058A
Cited
US1966163A
Cited
US2383311A
Cited
US2408910A
Cited
US2448513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-26 | 1966-05-28 | 1966-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-26 | 1970-05-28 | 1970-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-26 | 1974-05-28 | 1974-11-27 | $7700.00 | Window Closed / Lapsed |